<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区域 -->

      <div class="logo_box">
        <img src="../assets/logo.png" alt />
      </div>
      <!-- 登录表单区域 -->
      <el-form
        ref="loginForm"
        :model="loginForm"
        :rules="rules"
        label-width="0px"
        class="login-form"
      >
        <!-- 账号 -->
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" prefix-icon="iconfont icon-wode" placeholder="账号"></el-input>
        </el-form-item>

        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input
            v-model="loginForm.password"
            prefix-icon="iconfont icon-mima"
            placeholder="密码"
            type="password"
          ></el-input>
        </el-form-item>

        <!-- 按钮 -->
        <el-form-item class="login-btn">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetloginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>
<script>
export default {
  data () {
    return {
      // 登录数据绑定
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      // 表单验证规则
      rules: {
        // 验证用户名
        username: [
          { required: true, message: '请输入账号', trigger: 'blur' },
          {
            min: 5,
            max: 11,
            message: '账号长度在 6 到 11 个字符',
            trigger: 'blur'
          }
        ],
        password: [
          { required: true, message: '密码不能为空', trigger: 'blur' },
          { min: 6, max: 16, message: '密码长度错误', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    resetloginForm () {
      this.$refs.loginForm.resetFields()
    },
    login () {
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.$http.post('login', this.loginForm).then(response => {
            if (response.data.meta.status === 200) {
              this.$message.success('恭喜你，登录成功')
              console.log(response.data)
              // 1，将登陆成功之后的token保存到客户端的sessionStorage中
              //  1.1项目中除了登录之外的其他API接口，必须在登陆之后才能使用
              //  1.2token只应在当前网站打开期间生效
              window.sessionStorage.setItem('token', response.data.data.token)
              // 2.通过编程式导航跳转到后台主页，路由地址是/home
              this.$router.push('/home')
            } else {
              this.$message.error('登录失败')
            }
          })
        }
      })
    }
  }
}
</script>
<style lang="scss" scoped>
.login_container {
  background-color: aquamarine;
  height: 100%;
  .login_box {
    width: 450px;
    height: 300px;
    background-color: #ffffff;
    border-radius: 3px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    .logo_box {
      background-color: #ffffff;
      height: 130px;
      width: 130px;
      border: 1px solid #eee;
      border-radius: 50%;
      padding: 10px;
      box-shadow: 0 0 10px #ddd;
      position: absolute;
      left: 50%;
      top: 0;
      transform: translate(-50%, -50%);
      img {
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background-color: #eee;
      }
    }
    .login-form {
      position: absolute;
      bottom: 0;
      width: 100%;
      padding: 0 40px;
      box-sizing: border-box;
    }
    .login-btn {
      display: flex;
      justify-content: flex-end;
    }
  }
}
</style>
